Merck's (MRK -1%) Gardasil vaccine for preventing cervical cancer was found to be safe in a...

Merck's (MRK-1%) Gardasil vaccine for preventing cervical cancer was found to be safe in a massive study of the short-term effects of the drug. The report was the second in the past year showing that Gardasil causes no immediate side effects, although concerns exist about the long-term impact. The vaccine generated $1.2B in revenues last year.